Amounts of money may be written in several different ways. Cents may be written with the ¢ sign and dollars can be written with the dollar sign (\$). When we add money, we add the amounts and place the correct sign on the sum. Read more...iWorksheets: 4Study Guides: 1
##### Congruent Shapes
FreeCongruent shapes are shapes that are the exact same shape and size. Congruent shapes can be rotated or reflected. When 2 shapes are congruent, they have the exact same size and shape. Read more...iWorksheets: 4Study Guides: 1Vocabulary Sets: 1
##### Counting Money
FreeWhat Is Money? Money is what we use to make purchases for our needs and wants. Read more...iWorksheets: 8Study Guides: 1
##### Determine the One Operation Function
A one operation function is an equation with only one of the following operations: addition, subtraction, multiplication, or division. Read more...iWorksheets: 3Study Guides: 1
##### Expanding Numbers
What Are Expanding Numbers? An expanding number is taking a larger number apart and showing each number’s total value. Number 5398 in expanded form is 5000 + 300 + 90 + 8. Read more...iWorksheets: 3Study Guides: 1
##### Giving Change from \$1.00
What Is Giving Change? Change is the money you receive back when you purchase an item and give the cashier more than the item cost. To figure out the change you will receive from a purchase, simply subtract the total amount of the purchase from the amount you are giving the cashier. Read more...iWorksheets: 4Study Guides: 1
##### Greater Than/Less Than
What Is Greater Than and Less Than? When a number is greater than another number, this means it is a larger number. The symbol for greater than is >. When a number is less than another number, this means it is a smaller number. The symbol for less than is <. Read more...iWorksheets: 6Study Guides: 1
##### Number Words to 1,000
Numbers can be written in word form. Read more...iWorksheets: 3Study Guides: 1
##### Odd/Even Numbers
What is odd number? An odd number is a number that will have a leftover when divided into two equal groups. What is even number? An even number is a number that can be divided into two equal groups without any leftovers. Read more...iWorksheets: 6Study Guides: 1
##### Open Number Sentences
What Are Open Number Sentences? Open number sentences are equations that give one part of the equation along with the answer. In order to solve an open number sentence, the inverse operation is used. Read more...iWorksheets: 3Study Guides: 1
##### Ordering and Comparing Numbers
When you order numbers, you are putting the numbers in a sequence from the smallest value to the largest value. When you compare two numbers, you are finding which number is larger or smaller than the other. Read more...iWorksheets: 5Study Guides: 1Vocabulary Sets: 1
##### Patterns
A pattern is an order of things repeated over and over. Read more...iWorksheets: 4Study Guides: 1
##### Place Value
Place value is what each digit is worth. In the number 4,573 there are four thousands, five hundreds, seven tens, and three ones. How to Find the Place Value: In order to find the place value of a number, you can count the number of places from the right. The first number will be the ones place. The next number moving towards the left would be the tens place, and so on. Read more...iWorksheets: 7Study Guides: 1
##### Probability
What Is Probability? Probability is the chance that a particular event will occur. There are four different ways to show the probability: One way is to show the certainty: certain, likely, somewhat likely, not likely, impossible. The other three ways are with numbers. Probability word problems worksheet. Read more...iWorksheets: 4Study Guides: 1
##### Shapes
We are surrounded by many different kinds of shapes every day. Many shapes are flat. These shapes are two-dimensional plane figures. Read more...iWorksheets: 5Study Guides: 1
##### Skip Counting
You can skip count by large numbers such as 25, 50 or 100. Skip counting allows you to count by large numbers following a pattern. Read more...iWorksheets: 3Study Guides: 1
##### Solids and Faces
You can use solid shapes to help describe real-world objects. These shapes have surfaces called faces. Read more...iWorksheets: 4Study Guides: 1
##### Symmetry
Symmetry is an exact matching of two parts along a fold line. Read more...iWorksheets: 4Study Guides: 1
##### Temperature
What Is Temperature? Temperature is the measure of how hot or cold something is. Temperature is measured with a thermometer. Temperature is measured in degrees Celsius (ºC) or degrees Fahrenheit (ºF). Read more...iWorksheets: 3Study Guides: 1

### CO.3.1. Number Sense, Properties, and Operations

#### 3.1.1. The whole number system describes place value relationships and forms the foundation for efficient algorithms. Students can:

##### 3.1.1.a. Use place value and properties of operations to perform multi-digit arithmetic. (CCSS: 3.NBT)
###### Estimation
When you make an estimate, you are making a guess that is approximate. This is often done by rounding. Read more...iWorksheets :6Study Guides :1
###### Estimation
To estimate means to make an educated guess based on what you already know. Read more...iWorksheets :3Study Guides :1
###### Rounding to Nearest 10
Rounding makes numbers easier to work with if you do not need an exact number. Rounded numbers are only approximate. You can use rounded numbers to get an answer that is close but does not have to be exact. Read more...iWorksheets :3Study Guides :1
###### Rounding Numbers
What Is Rounding? Rounding means reducing the digits in a number while trying to keep its value similar. How to Round: The number in the given place is increased by one if the digit to its right is 5 or greater. The number in the given place remains the same if the digit to its right is less than 5. Read more...iWorksheets :3Study Guides :1Vocabulary :1
###### 3.1.1.a.ii. Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction. (CCSS: 3.NBT.2)
FreeAdding large numbers involves breaking the problem down into smaller addition facts. Read more...iWorksheets :4Study Guides :1
###### 3 Digit Subtraction
What Is Three-Digit Subtraction? We subtract to compare numbers. We are able to find the difference between numbers through subtraction. We use subtraction to find out how much more we have or how much smaller something is in comparison to another number. Read more...iWorksheets :3Study Guides :1
###### Subtraction Facts
Subtract means to take away. The meaning of 3-2=1 is that two objects are taken away from a group of three objects and one object remains. Subtraction Facts fun Worksheets and Printables. Read more...iWorksheets :3Study Guides :1Vocabulary :1
###### Commutative Property
The commutative property of addition says that we can add numbers in any order and get the same sum. Read more...iWorksheets :3Study Guides :1
###### Multi-step Word Problems
Some word problems require more than one step to solve. These are called multi-step word problems. Read more...iWorksheets :3Study Guides :1
###### Commutative/Associative Properties
Using the Commutative Property in addition means that the order of addends does not matter; the sum will remain the same. Read more...iWorksheets :3Study Guides :1
###### One More, One Less
Count forward by 1 or count backwards by 1. Read more...iWorksheets :3Study Guides :1Vocabulary :1
FreeWhen you add, you combine two or more numbers together to get ONE answer… one SUM. A sum is the answer to an addition problem. Read more...iWorksheets :6Study Guides :1Vocabulary :2
###### Double Digit Addition without Regrouping
First: Add the two numbers in the ONES place.
iWorksheets :5Study Guides :1Vocabulary :1
###### Story Problems
A story problem is a word problem that contains a problem you need to solve by adding, subtracting, multiplying or dividing in order to figure out the answer. Read more...iWorksheets :4Study Guides :1Vocabulary :1
###### Double Digit Subtraction
What Is Double Digit Subtraction? Double digit subtraction is taking a number with two digits (ex. 23) and subtracting it from another two digit number (ex. 33). The answer is known as the difference. Read more...iWorksheets :4Study Guides :1
Addition is combining two or more numbers. The term used for addition is plus. When two or more numbers are combined they form a new number called a sum. Subtraction is “taking away” one number from another. The term is minus. The number left after subtracting is called a difference. Read more...iWorksheets :3Study Guides :1
What Is Double Digit Addition? Double digit addition is taking a two digit number (ex. 32) and adding it to another two digit number (ex. 27). The answer of these two addends is known as the sum. Read more...iWorksheets :4Study Guides :1
###### Regrouping
What Is Regrouping? Regrouping in addition is used when the sum of the ones place is larger than nine. The tens place of the sum is moved to the top of the tens place column to be added with the others. Read more...iWorksheets :3Study Guides :1
###### Associative Property
Associative Property of Addition explains that when three or more numbers are added, the sum is the same regardless of the order in which the numbers are grouped and/or added. Read more...iWorksheets :3Study Guides :1
###### Word Problems
What Are Story Problems? Story problems are a bunch of sentences set up to give you information in order to solve a problem. Story problems most often give you all the information needed to solve the problem. They may even include information you do not need at all. Read more...iWorksheets :7Study Guides :1
###### Division/Multiplication
Understanding of models for multiplication, place value, and properties of operations (in particular, the distributive property). Read more...iWorksheets :6Study Guides :1

#### 3.1.2. Parts of a whole can be modeled and represented in different ways. Students can:

##### 3.1.2.a. Develop understanding of fractions as numbers. (CCSS: 3.NF)
###### Fractions Greater Than or Less Than 1/2
Partition circles and rectangles into two, three, or four equal shares, describe the shares using the words halves, thirds, half of, a third of, etc., and describe the whole as two halves, three thirds, four fourths. Recognize that equal shares of identical wholes need not have the same shape. Read more...iWorksheets :5Study Guides :1Vocabulary :1
Addition and subtraction of decimals is like adding and subtracting whole numbers. The only thing we must remember is to line up the place values correctly. Read more...iWorksheets :14Study Guides :1Vocabulary :1
###### Fractions
Fractions can show a part of a group or part of a set. Read more...iWorksheets :6Study Guides :1
###### Probability
Probability word problems worksheet. Probability is the chance of whether something will happen or not. If two things have an EQUAL chance of happening, they have the SAME probability. If there are MORE chances of something happening (A) than something else (B), that means there is a HIGHER PROBABILITY of that something (A) happening. Read more...iWorksheets :3Study Guides :1
###### Number Line
A number line is a line that shows any group of numbers in their least to greatest value. Read more...iWorksheets :3Study Guides :1
###### Pattern Blocks
A fraction is a part of a whole of something. Read more...iWorksheets :3Study Guides :1
###### Comparing Fractions
When comparing fractions, you are finding which fraction is greater and which fractions is less than the other. Similar to comparing numbers, there are symbols to use when comparing fractions. Read more...iWorksheets :4Study Guides :1Vocabulary :1
###### Fractions
A fraction is a part of a whole. Fractions for 1/2, 1/3, 1/4, 1/5, 1/6, 1/7, 1/8, 1/10, and 1/12 Read more...iWorksheets :7Study Guides :1Vocabulary :2
###### Decimals/Fractions
Express decimals as an equivalent form of fractions to tenths and hundredths. Read more...iWorksheets :4Study Guides :1Vocabulary :1
What Is Addition and Subtraction of Fractions? Addition is combining two or more fractions. The term used for addition is plus. When two or more numbers, or addends, are combined they form a new number called a sum. Subtraction is “taking away” one fraction from another fraction. The term is minus. The number left after subtracting is called a difference. Read more...iWorksheets :4Study Guides :1
###### Equivalent Fractions to 1/2
Fractions that are equivalent to ½ are fractions that have different denominators than ½, but still show half. Fractions that are equivalent to ½ can be simplified to ½. Fractions equivalent to ½ have an even number as their denominator. Read more...iWorksheets :3Study Guides :1
###### Fractions
The top number of a fraction is called the numerator. It shows how many pieces of a whole we are talking about. The bottom number is called the denominator. It shows how many pieces an object was divided into, or how many total pieces we have. Read more...iWorksheets :4Study Guides :1
###### Number Line
A number line is a line that shows any group of numbers in their least to greatest value. Read more...iWorksheets :3Study Guides :1
###### 3.1.2.a.iii. Explain equivalence of fractions in special cases, and compare fractions by reasoning about their size. (CCSS: 3.NF.3)
3.1.2.a.iii.1. Identify two fractions as equivalent (equal) if they are the same size, or the same point on a number line. (CCSS: 3.NF.3a)
###### Fractions
The top number of a fraction is called the numerator. It shows how many pieces of a whole we are talking about. The bottom number is called the denominator. It shows how many pieces an object was divided into, or how many total pieces we have. Read more...iWorksheets :4Study Guides :1
3.1.2.a.iii.2. Identify and generate simple equivalent fractions. Explain why the fractions are equivalent. (CCSS: 3.NF.3b)
###### Fractions
The top number of a fraction is called the numerator. It shows how many pieces of a whole we are talking about. The bottom number is called the denominator. It shows how many pieces an object was divided into, or how many total pieces we have. Read more...iWorksheets :4Study Guides :1
3.1.2.a.iii.3. Express whole numbers as fractions, and recognize fractions that are equivalent to whole numbers. (CCSS: 3.NF.3c)
###### Fractions Greater Than or Less Than 1/2
Partition circles and rectangles into two, three, or four equal shares, describe the shares using the words halves, thirds, half of, a third of, etc., and describe the whole as two halves, three thirds, four fourths. Recognize that equal shares of identical wholes need not have the same shape. Read more...iWorksheets :5Study Guides :1Vocabulary :1
Addition and subtraction of decimals is like adding and subtracting whole numbers. The only thing we must remember is to line up the place values correctly. Read more...iWorksheets :14Study Guides :1Vocabulary :1
###### Fractions
Fractions can show a part of a group or part of a set. Read more...iWorksheets :6Study Guides :1
###### Probability
Probability word problems worksheet. Probability is the chance of whether something will happen or not. If two things have an EQUAL chance of happening, they have the SAME probability. If there are MORE chances of something happening (A) than something else (B), that means there is a HIGHER PROBABILITY of that something (A) happening. Read more...iWorksheets :3Study Guides :1
###### Number Line
A number line is a line that shows any group of numbers in their least to greatest value. Read more...iWorksheets :3Study Guides :1
###### Pattern Blocks
A fraction is a part of a whole of something. Read more...iWorksheets :3Study Guides :1
###### Comparing Fractions
When comparing fractions, you are finding which fraction is greater and which fractions is less than the other. Similar to comparing numbers, there are symbols to use when comparing fractions. Read more...iWorksheets :4Study Guides :1Vocabulary :1
###### Fractions
A fraction is a part of a whole. Fractions for 1/2, 1/3, 1/4, 1/5, 1/6, 1/7, 1/8, 1/10, and 1/12 Read more...iWorksheets :7Study Guides :1Vocabulary :2
###### Decimals/Fractions
Express decimals as an equivalent form of fractions to tenths and hundredths. Read more...iWorksheets :4Study Guides :1Vocabulary :1
What Is Addition and Subtraction of Fractions? Addition is combining two or more fractions. The term used for addition is plus. When two or more numbers, or addends, are combined they form a new number called a sum. Subtraction is “taking away” one fraction from another fraction. The term is minus. The number left after subtracting is called a difference. Read more...iWorksheets :4Study Guides :1
###### Equivalent Fractions to 1/2
Fractions that are equivalent to ½ are fractions that have different denominators than ½, but still show half. Fractions that are equivalent to ½ can be simplified to ½. Fractions equivalent to ½ have an even number as their denominator. Read more...iWorksheets :3Study Guides :1
###### Fractions
The top number of a fraction is called the numerator. It shows how many pieces of a whole we are talking about. The bottom number is called the denominator. It shows how many pieces an object was divided into, or how many total pieces we have. Read more...iWorksheets :4Study Guides :1
3.1.2.a.iii.4. Compare two fractions with the same numerator or the same denominator by reasoning about their size. (CCSS: 3.NF.3d)
###### Fractions Greater Than or Less Than 1/2
Partition circles and rectangles into two, three, or four equal shares, describe the shares using the words halves, thirds, half of, a third of, etc., and describe the whole as two halves, three thirds, four fourths. Recognize that equal shares of identical wholes need not have the same shape. Read more...iWorksheets :5Study Guides :1Vocabulary :1
###### Comparing Fractions
When comparing fractions, you are finding which fraction is greater and which fractions is less than the other. Similar to comparing numbers, there are symbols to use when comparing fractions. Read more...iWorksheets :4Study Guides :1Vocabulary :1
###### Equivalent Fractions to 1/2
Fractions that are equivalent to ½ are fractions that have different denominators than ½, but still show half. Fractions that are equivalent to ½ can be simplified to ½. Fractions equivalent to ½ have an even number as their denominator. Read more...iWorksheets :3Study Guides :1
###### Fractions
The top number of a fraction is called the numerator. It shows how many pieces of a whole we are talking about. The bottom number is called the denominator. It shows how many pieces an object was divided into, or how many total pieces we have. Read more...iWorksheets :4Study Guides :1
3.1.2.a.iii.5. Explain why comparisons are valid only when the two fractions refer to the same whole. (CCSS: 3.NF.3d)
###### Fractions Greater Than or Less Than 1/2
Partition circles and rectangles into two, three, or four equal shares, describe the shares using the words halves, thirds, half of, a third of, etc., and describe the whole as two halves, three thirds, four fourths. Recognize that equal shares of identical wholes need not have the same shape. Read more...iWorksheets :5Study Guides :1Vocabulary :1
###### Comparing Fractions
When comparing fractions, you are finding which fraction is greater and which fractions is less than the other. Similar to comparing numbers, there are symbols to use when comparing fractions. Read more...iWorksheets :4Study Guides :1Vocabulary :1
###### Equivalent Fractions to 1/2
Fractions that are equivalent to ½ are fractions that have different denominators than ½, but still show half. Fractions that are equivalent to ½ can be simplified to ½. Fractions equivalent to ½ have an even number as their denominator. Read more...iWorksheets :3Study Guides :1
###### Fractions
The top number of a fraction is called the numerator. It shows how many pieces of a whole we are talking about. The bottom number is called the denominator. It shows how many pieces an object was divided into, or how many total pieces we have. Read more...iWorksheets :4Study Guides :1
3.1.2.a.iii.6. Record the results of comparisons with the symbols >, =, or <, and justify the conclusions. (CCSS: 3.NF.3d)
###### Fractions Greater Than or Less Than 1/2
Partition circles and rectangles into two, three, or four equal shares, describe the shares using the words halves, thirds, half of, a third of, etc., and describe the whole as two halves, three thirds, four fourths. Recognize that equal shares of identical wholes need not have the same shape. Read more...iWorksheets :5Study Guides :1Vocabulary :1
###### Comparing Fractions
When comparing fractions, you are finding which fraction is greater and which fractions is less than the other. Similar to comparing numbers, there are symbols to use when comparing fractions. Read more...iWorksheets :4Study Guides :1Vocabulary :1
###### Equivalent Fractions to 1/2
Fractions that are equivalent to ½ are fractions that have different denominators than ½, but still show half. Fractions that are equivalent to ½ can be simplified to ½. Fractions equivalent to ½ have an even number as their denominator. Read more...iWorksheets :3Study Guides :1
###### Fractions
The top number of a fraction is called the numerator. It shows how many pieces of a whole we are talking about. The bottom number is called the denominator. It shows how many pieces an object was divided into, or how many total pieces we have. Read more...iWorksheets :4Study Guides :1

#### 3.1.3. Multiplication and division are inverse operations and can be modeled in a variety of ways. Students can:

##### 3.1.3.a. Represent and solve problems involving multiplication and division. (CCSS: 3.OA)
###### Odd/Even
A number can be identified as odd or even. Odd numbers can't be divided exactly by 2. Read more...iWorksheets :3Study Guides :1
###### Commutative Property
The commutative property of addition says that we can add numbers in any order and get the same sum. Read more...iWorksheets :3Study Guides :1
###### Commutative/Associative Properties
Using the Commutative Property in addition means that the order of addends does not matter; the sum will remain the same. Read more...iWorksheets :3Study Guides :1
###### Word Problems
Multiply and divide, writing number sentences. Read more...iWorksheets :3Study Guides :1
###### More Multiplication
Multiplication of two digits by two digits. What Is Multiplication? Multiplication is a short way of adding or counting. Multiplication is a faster way of adding. By multiplying numbers together, you are adding a series of one number to itself. Read more...iWorksheets :3Study Guides :1
###### Multiplication
What Is Multiplication? Multiplication is a short way of adding or counting. Multiplication is a faster way of adding by using strategies to remember what different groups of each number equal. By multiplying numbers together, you are adding a series of one number to itself. The answer to a multiplication problem is called a product. Read more...iWorksheets :7Study Guides :1
###### Division/Multiplication
Understanding of models for multiplication, place value, and properties of operations (in particular, the distributive property). Read more...iWorksheets :6Study Guides :1
###### Multiplication
Multiplication is similar to adding a number to itself a certain number of times. When multiplying an odd number with an odd number, the product is always an odd number. When multiplying an odd number with an even number or two even numbers, the product is always an even number. Read more...iWorksheets :19Study Guides :1
###### Word Problems
Multiply and divide, writing number sentences. Read more...iWorksheets :3Study Guides :1
###### Division
What Is Division? Division is splitting up numbers into equal parts. The process of finding out how many times one number will go into another number. Division is a series of repeated subtraction. The parts of a division problem include the divisor, dividend, quotient and remainder. Read more...iWorksheets :4Study Guides :1
###### Division/Multiplication
Understanding of models for multiplication, place value, and properties of operations (in particular, the distributive property). Read more...iWorksheets :6Study Guides :1
###### Division
What Is Division? Division is an operation that tells: how many equal sized groups, how many in each group. The number you divide by is called the DIVISOR. The number you are dividing is called the DIVIDEND. And the answer is called the QUOTIENT. Read more...iWorksheets :6Study Guides :1
###### Word Problems
Multiply and divide, writing number sentences. Read more...iWorksheets :3Study Guides :1
###### Problem Solving
What Is Problem Solving? Problem solving is finding an answer to a question. How to Problem Solve: Read the problem carefully. Decide on an operation to use to solve the problem. Solve the problem. Check your work and make sure that your answer makes sense. Read more...iWorksheets :3Study Guides :1
##### 3.1.3.b. Apply properties of multiplication and the relationship between multiplication and division. (CCSS: 3.OA)
###### Commutative Property
The commutative property of addition says that we can add numbers in any order and get the same sum. Read more...iWorksheets :3Study Guides :1
###### Commutative/Associative Properties
Using the Commutative Property in addition means that the order of addends does not matter; the sum will remain the same. Read more...iWorksheets :3Study Guides :1
###### Word Problems
Multiply and divide, writing number sentences. Read more...iWorksheets :3Study Guides :1
###### More Multiplication
Multiplication of two digits by two digits. What Is Multiplication? Multiplication is a short way of adding or counting. Multiplication is a faster way of adding. By multiplying numbers together, you are adding a series of one number to itself. Read more...iWorksheets :3Study Guides :1
###### Multiplication
What Is Multiplication? Multiplication is a short way of adding or counting. Multiplication is a faster way of adding by using strategies to remember what different groups of each number equal. By multiplying numbers together, you are adding a series of one number to itself. The answer to a multiplication problem is called a product. Read more...iWorksheets :7Study Guides :1
###### Division
What Is Division? Division is splitting up numbers into equal parts. The process of finding out how many times one number will go into another number. Division is a series of repeated subtraction. The parts of a division problem include the divisor, dividend, quotient and remainder. Read more...iWorksheets :4Study Guides :1
###### Division/Multiplication
Understanding of models for multiplication, place value, and properties of operations (in particular, the distributive property). Read more...iWorksheets :6Study Guides :1
###### Multiplication
Multiplication is similar to adding a number to itself a certain number of times. When multiplying an odd number with an odd number, the product is always an odd number. When multiplying an odd number with an even number or two even numbers, the product is always an even number. Read more...iWorksheets :19Study Guides :1
###### Division
What Is Division? Division is an operation that tells: how many equal sized groups, how many in each group. The number you divide by is called the DIVISOR. The number you are dividing is called the DIVIDEND. And the answer is called the QUOTIENT. Read more...iWorksheets :6Study Guides :1
###### Division
What Is Division? Division is an operation that tells: how many equal sized groups, how many in each group. The number you divide by is called the DIVISOR. The number you are dividing is called the DIVIDEND. And the answer is called the QUOTIENT. Read more...iWorksheets :6Study Guides :1
##### 3.1.3.c. Multiply and divide within 100. (CCSS: 3.OA)
###### Odd/Even
A number can be identified as odd or even. Odd numbers can't be divided exactly by 2. Read more...iWorksheets :3Study Guides :1
###### Commutative Property
The commutative property of addition says that we can add numbers in any order and get the same sum. Read more...iWorksheets :3Study Guides :1
###### Commutative/Associative Properties
Using the Commutative Property in addition means that the order of addends does not matter; the sum will remain the same. Read more...iWorksheets :3Study Guides :1
###### One More, One Less
Count forward by 1 or count backwards by 1. Read more...iWorksheets :3Study Guides :1Vocabulary :1
###### Word Problems
Multiply and divide, writing number sentences. Read more...iWorksheets :3Study Guides :1
###### Double Digit Addition without Regrouping
First: Add the two numbers in the ONES place.
iWorksheets :5Study Guides :1Vocabulary :1
###### More Multiplication
Multiplication of two digits by two digits. What Is Multiplication? Multiplication is a short way of adding or counting. Multiplication is a faster way of adding. By multiplying numbers together, you are adding a series of one number to itself. Read more...iWorksheets :3Study Guides :1
###### Multiplication
What Is Multiplication? Multiplication is a short way of adding or counting. Multiplication is a faster way of adding by using strategies to remember what different groups of each number equal. By multiplying numbers together, you are adding a series of one number to itself. The answer to a multiplication problem is called a product. Read more...iWorksheets :7Study Guides :1
###### Division
What Is Division? Division is splitting up numbers into equal parts. The process of finding out how many times one number will go into another number. Division is a series of repeated subtraction. The parts of a division problem include the divisor, dividend, quotient and remainder. Read more...iWorksheets :4Study Guides :1
###### Division/Multiplication
Understanding of models for multiplication, place value, and properties of operations (in particular, the distributive property). Read more...iWorksheets :6Study Guides :1
###### Multiplication
Multiplication is similar to adding a number to itself a certain number of times. When multiplying an odd number with an odd number, the product is always an odd number. When multiplying an odd number with an even number or two even numbers, the product is always an even number. Read more...iWorksheets :19Study Guides :1
###### Division
What Is Division? Division is an operation that tells: how many equal sized groups, how many in each group. The number you divide by is called the DIVISOR. The number you are dividing is called the DIVIDEND. And the answer is called the QUOTIENT. Read more...iWorksheets :6Study Guides :1
###### One More, One Less
Count forward by 1 or count backwards by 1. Read more...iWorksheets :3Study Guides :1Vocabulary :1
###### Double Digit Addition without Regrouping
First: Add the two numbers in the ONES place.
iWorksheets :5Study Guides :1Vocabulary :1
###### Multiplication
Multiplication is similar to adding a number to itself a certain number of times. When multiplying an odd number with an odd number, the product is always an odd number. When multiplying an odd number with an even number or two even numbers, the product is always an even number. Read more...iWorksheets :19Study Guides :1
##### 3.1.3.d. Solve problems involving the four operations, and identify and explain patterns in arithmetic. (CCSS: 3.OA)
###### Multi-step Word Problems
Some word problems require more than one step to solve. These are called multi-step word problems. Read more...iWorksheets :3Study Guides :1
###### Word Problems
Multiply and divide, writing number sentences. Read more...iWorksheets :3Study Guides :1
###### Story Problems
A story problem is a word problem that contains a problem you need to solve by adding, subtracting, multiplying or dividing in order to figure out the answer. Read more...iWorksheets :4Study Guides :1Vocabulary :1
###### Problem Solving
What Is Problem Solving? Problem solving is finding an answer to a question. How to Problem Solve: Read the problem carefully. Decide on an operation to use to solve the problem. Solve the problem. Check your work and make sure that your answer makes sense. Read more...iWorksheets :3Study Guides :1
###### Word Problems
What Are Story Problems? Story problems are a bunch of sentences set up to give you information in order to solve a problem. Story problems most often give you all the information needed to solve the problem. They may even include information you do not need at all. Read more...iWorksheets :7Study Guides :1
###### Multi-step Word Problems
Some word problems require more than one step to solve. These are called multi-step word problems. Read more...iWorksheets :3Study Guides :1
###### Estimation
When you make an estimate, you are making a guess that is approximate. This is often done by rounding. Read more...iWorksheets :6Study Guides :1
###### Estimation
To estimate means to make an educated guess based on what you already know. Read more...iWorksheets :3Study Guides :1

### CO.3.3. Data Analysis, Statistics, and Probability

#### 3.3.1. Visual displays are used to describe data. Students can:

##### 3.3.1.a. Represent and interpret data. (CCSS: 3.MD)
###### Represent Data
You can represent data by bar graphs, pictographs and tables. Read more...iWorksheets :3Study Guides :1
###### Graphs and Charts
What Are Graphs? A way to show information in the form of shapes or pictures. Graphs show the relationship between two sets of information. There are many different types of graphs. A few of them include bar graphs, line graphs, pictographs, and circle graphs. Read more...iWorksheets :6Study Guides :1Vocabulary :1
###### Tables and Graphs
What Are Bar, Circle, and Line Graphs? Bar Graphs are used to compare data. A bar graph is used to show relationships between groups. Circle Graphs are also known as Pie graphs or charts. They consist of a circle divided into parts. Line Graphs show gradual changes in data. Read more...iWorksheets :6Study Guides :1
###### Graphs
Graphs are visual displays of data and information. A bar graph is a graph that uses BARS to show data. Bar graphs are used to compare two or more objects or people. Graphs and charts allow people to learn information quickly and easily. Read more...iWorksheets :7Study Guides :1
###### Measurement
FreeThere are two system of measurement for length that can be used. U.S customary System and Metric System. U.S. Customary System & Metric system. Read more...iWorksheets :7Study Guides :1Vocabulary :3
###### Units of Measure
When you need to measure an object, you must decide if you are: Measuring in length, weight, or capacity, choosing the unit that makes sense to measure the object, Measuring in the customary system or the metric system. Read more...iWorksheets :3Study Guides :1
###### Measurement
Measurement is the use of units to show size, length, weight, or capacity.There are customary measurements and metric measurements. Read more...iWorksheets :9Study Guides :1Vocabulary :2
###### Measurement
Measurement in inches, feet, centimeters, meters, cups, pints, quarts, gallons, liters, pounds, grams, and kilograms. Read more...iWorksheets :6Study Guides :1Vocabulary :3
###### Units of Measure
What are Units of Measurement? People measure mass, volume, and length. These measurements are labeled with appropriate unit of measurement. Read more...iWorksheets :3Study Guides :1
###### Comparing Objects
When you compare two objects, you identify how the objects are ALIKE and how they are DIFFERENT. Read more...iWorksheets :3Study Guides :1Vocabulary :2
###### Determine Appropriate Standard of Units
What are the Standard of Units? When measuring objects or distances, there are certain measurements of length, distance, weight, and capacity that should be used. There are customary standard of units and metric standard of units. Read more...iWorksheets :3Study Guides :1

### CO.3.4. Shape, Dimension, and Geometric Relationships

#### 3.4.1. Geometric figures are described by their attributes. Students can:

##### 3.4.1.a. Reason with shapes and their attributes. (CCSS: 3.G)
###### Fractions Greater Than or Less Than 1/2
Partition circles and rectangles into two, three, or four equal shares, describe the shares using the words halves, thirds, half of, a third of, etc., and describe the whole as two halves, three thirds, four fourths. Recognize that equal shares of identical wholes need not have the same shape. Read more...iWorksheets :5Study Guides :1Vocabulary :1
###### Algebra
Comparing whole numbers, fractions, and decimals means looking at the values of two numbers and deciding if they are greater than, less than or equal to each other. Read more...iWorksheets :3Study Guides :1
###### Fractions
Fractions can show a part of a group or part of a set. Read more...iWorksheets :6Study Guides :1
###### Probability
Probability word problems worksheet. Probability is the chance of whether something will happen or not. If two things have an EQUAL chance of happening, they have the SAME probability. If there are MORE chances of something happening (A) than something else (B), that means there is a HIGHER PROBABILITY of that something (A) happening. Read more...iWorksheets :3Study Guides :1
###### Number Line
A number line is a line that shows any group of numbers in their least to greatest value. Read more...iWorksheets :3Study Guides :1
###### Pattern Blocks
A fraction is a part of a whole of something. Read more...iWorksheets :3Study Guides :1
###### Comparing Fractions
When comparing fractions, you are finding which fraction is greater and which fractions is less than the other. Similar to comparing numbers, there are symbols to use when comparing fractions. Read more...iWorksheets :4Study Guides :1Vocabulary :1
###### Fractions
A fraction is a part of a whole. Fractions for 1/2, 1/3, 1/4, 1/5, 1/6, 1/7, 1/8, 1/10, and 1/12 Read more...iWorksheets :7Study Guides :1Vocabulary :2
###### Decimals/Fractions
Express decimals as an equivalent form of fractions to tenths and hundredths. Read more...iWorksheets :4Study Guides :1Vocabulary :1
What Is Addition and Subtraction of Fractions? Addition is combining two or more fractions. The term used for addition is plus. When two or more numbers, or addends, are combined they form a new number called a sum. Subtraction is “taking away” one fraction from another fraction. The term is minus. The number left after subtracting is called a difference. Read more...iWorksheets :4Study Guides :1
###### Equivalent Fractions to 1/2
Fractions that are equivalent to ½ are fractions that have different denominators than ½, but still show half. Fractions that are equivalent to ½ can be simplified to ½. Fractions equivalent to ½ have an even number as their denominator. Read more...iWorksheets :3Study Guides :1
###### Fractions
The top number of a fraction is called the numerator. It shows how many pieces of a whole we are talking about. The bottom number is called the denominator. It shows how many pieces an object was divided into, or how many total pieces we have. Read more...iWorksheets :4Study Guides :1

#### 3.4.2. Linear and area measurement are fundamentally different and require different units of measure. Students can:

##### 3.4.2.a. Use concepts of area and relate area to multiplication and to addition. (CCSS: 3.MD)
###### Area and Perimeter
The area of a figure is the space inside the figure. The perimeter of a polygon is the distance around it. The perimeter is the sum of the lengths of ALL the sides. Read more...iWorksheets :5Study Guides :1
###### Area and Perimeter
The area of a figure is the space inside the figure. The perimeter of a polygon is the distance around it. The perimeter is the sum of the lengths of ALL the sides. Read more...iWorksheets :5Study Guides :1
###### Area and Perimeter
The area of a figure is the space inside the figure. The perimeter of a polygon is the distance around it. The perimeter is the sum of the lengths of ALL the sides. Read more...iWorksheets :5Study Guides :1
##### 3.4.2.b. Describe perimeter as an attribute of plane figures and distinguish between linear and area measures. (CCSS: 3.MD)
###### Area and Perimeter
The area of a figure is the space inside the figure. The perimeter of a polygon is the distance around it. The perimeter is the sum of the lengths of ALL the sides. Read more...iWorksheets :5Study Guides :1
###### Perimeter
Perimeter is the distance around the outside of an object. Read more...iWorksheets :3Study Guides :1Vocabulary :1
###### Perimeter
What Is Perimeter? The perimeter is the measurement of the distance around the outside of a shape or object. To find the perimeter of a shape or object, simply add the outside dimensions together. Read more...iWorksheets :4Study Guides :1
##### 3.4.2.c. Solve real world and mathematical problems involving perimeters of polygons. (CCSS: 3.MD.8)
###### Area and Perimeter
The area of a figure is the space inside the figure. The perimeter of a polygon is the distance around it. The perimeter is the sum of the lengths of ALL the sides. Read more...iWorksheets :5Study Guides :1
###### Perimeter
Perimeter is the distance around the outside of an object. Read more...iWorksheets :3Study Guides :1Vocabulary :1
###### Perimeter
What Is Perimeter? The perimeter is the measurement of the distance around the outside of a shape or object. To find the perimeter of a shape or object, simply add the outside dimensions together. Read more...iWorksheets :4Study Guides :1

#### 3.4.3. Time and attributes of objects can be measured with appropriate tools. Students can:

##### 3.4.3.a. Solve problems involving measurement and estimation of intervals of time, liquid volumes, and masses of objects. (CCSS: 3.MD)
###### Time
Calculate elapsed time in hours and half hours, not crossing AM/PM. Read more...iWorksheets :6Study Guides :1
###### Time
Tell time to the nearest hour, half hour, and quarter hour. Read more...iWorksheets :8Study Guides :1Vocabulary :2
###### Time
What Is Time? Time is a way to measure days, nights, and events. Time is made up of seconds, minutes, and hours. An analog clock is a clock with the numbers 1 through 12 around in a circle. Read more...iWorksheets :13Study Guides :1
###### Time
Calculate elapsed time in hours and half hours, not crossing AM/PM. Read more...iWorksheets :6Study Guides :1
###### Time
Tell time to the nearest hour, half hour, and quarter hour. Read more...iWorksheets :8Study Guides :1Vocabulary :2
###### Time
What Is Time? Time is a way to measure days, nights, and events. Time is made up of seconds, minutes, and hours. An analog clock is a clock with the numbers 1 through 12 around in a circle. Read more...iWorksheets :13Study Guides :1
###### Measurement
FreeThere are two system of measurement for length that can be used. U.S customary System and Metric System. U.S. Customary System & Metric system. Read more...iWorksheets :7Study Guides :1Vocabulary :3
###### Units of Measure
When you need to measure an object, you must decide if you are: Measuring in length, weight, or capacity, choosing the unit that makes sense to measure the object, Measuring in the customary system or the metric system. Read more...iWorksheets :3Study Guides :1
###### Measurement
Measurement is the use of units to show size, length, weight, or capacity.There are customary measurements and metric measurements. Read more...iWorksheets :9Study Guides :1Vocabulary :2
###### Measurement
Measurement in inches, feet, centimeters, meters, cups, pints, quarts, gallons, liters, pounds, grams, and kilograms. Read more...iWorksheets :6Study Guides :1Vocabulary :3
###### Units of Measure
What are Units of Measurement? People measure mass, volume, and length. These measurements are labeled with appropriate unit of measurement. Read more...iWorksheets :3Study Guides :1
###### Comparing Objects
When you compare two objects, you identify how the objects are ALIKE and how they are DIFFERENT. Read more...iWorksheets :3Study Guides :1Vocabulary :2
###### Determine Appropriate Standard of Units
What are the Standard of Units? When measuring objects or distances, there are certain measurements of length, distance, weight, and capacity that should be used. There are customary standard of units and metric standard of units. Read more...iWorksheets :3Study Guides :1